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Antimicrobial and antiviral composition, and method of producing the same

An antimicrobial and composition technology, applied in botany equipment and methods, biocides, animal repellants, etc., can solve the problem of reducing antimicrobial and antiviral performance, not disclosing methods for inhibiting copper oxide oxidation, easy oxidation, etc. problem, to achieve excellent antimicrobial and antiviral effects

Inactive Publication Date: 2015-08-12
SHOWA DENKO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] In Patent Document 11, copper(I) oxide is easily oxidized in air, resulting in a possible decrease in antimicrobial and antiviral properties
In this regard, Patent Document 11 does not disclose a method for suppressing the oxidation of copper(I) oxide

Method used

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  • Antimicrobial and antiviral composition, and method of producing the same
  • Antimicrobial and antiviral composition, and method of producing the same
  • Antimicrobial and antiviral composition, and method of producing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0156] Heat 3000mL of distilled water to 50°C, then add 149.8g of copper sulfate (II) pentahydrate, while stirring until completely dissolved. Then, 200 g of 1.5 mol / L glucose aqueous solution was added, and then 720 g of 2 mol / L sodium hydroxide aqueous solution and 120 mL of 2 mol / L hydrazine hydrate aqueous solution were simultaneously added. After the mixture was vigorously stirred for 1 minute, the stirred mixture was filtered with a 0.3 μm membrane filter, then the filtered material was washed with 3000 mL of distilled water, and the solid content was collected. After drying at 60° C. for 3 hours, the solid content was pulverized with an agate mortar to obtain cuprous oxide particles. According to the nitrogen adsorption method, the BET specific surface area of ​​the obtained cuprous oxide particles is 29.20m 2 / g. Suspension 1 was obtained by dispersing 5 g of the obtained cuprous oxide particles in 60 mL of ethanol solvent. 1.827 g of TEOS with a purity of 95% was a...

Embodiment 2

[0159] Cuprous oxide particles were prepared in the same manner as in Example 1. 5 g of the obtained cuprous oxide particles were dispersed in 60 mL of ethanol solvent to obtain Suspension 1. 2.742 g of TEOS with a purity of 95% was added to 20 mL of ethanol to obtain a solution 2 (which is equivalent to a total of 15 parts by mass of silica added based on 100 parts by mass of cuprous oxide particles). Solution 2 was mixed with suspension 1, and 10 mL of pure water was added to the mixture. Then, an antimicrobial and antiviral material (silica-coated cuprous oxide particles) B was obtained in the same manner as in Example 1. The mass and BET specific surface area of ​​the silica coating layer in the obtained silica-coated cuprous oxide particles are shown in Table 1.

Embodiment 3

[0161] Cuprous oxide particles were prepared in the same manner as in Example 1. 5 g of the obtained cuprous oxide particles were dispersed in 60 mL of ethanol solvent to obtain Suspension 1. 3.654 g of TEOS with a purity of 95% was added to 20 mL of ethanol to obtain a solution 2 (which is equivalent to a total of 20 parts by mass of silica added based on 100 parts by mass of cuprous oxide particles). Solution 2 was mixed with suspension 1, and 10 mL of pure water was added to the mixture. Then, an antimicrobial and antiviral material (silica-coated cuprous oxide particles) C was obtained in the same manner as in Example 1. The mass and BET specific surface area of ​​the silica coating layer in the obtained silica-coated cuprous oxide particles are shown in Table 1.

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Abstract

An antimicrobial and antiviral composition, a method of producing the same, and the like are provided, which are capable of exhibiting excellent antimicrobial and antiviral properties for a long time through various uses. The antimicrobial and antiviral material includes cuprous oxide particles and a silica-coating layer on at least one part of the surface of the cuprous oxide particles, in which the content of the silica-coating layer is 5 to 20 parts by mass based on 100 parts by mass of the cuprous oxide particles, and the BET specific surface area of the cuprous oxide particles coated with silica is 5 to 100 m2 / g.

Description

technical field [0001] The present invention relates to antimicrobial and antiviral materials, antimicrobial and antiviral compositions, processes for their preparation, dispersions of antimicrobial and antiviral compositions, coating agents containing antimicrobial and antiviral compositions , antimicrobial and antiviral films, and antimicrobial and antiviral articles, which are applied to building materials, sanitary materials, antifouling materials, etc. in the living environment. Background technique [0002] Copper(II) ions are known to be active ingredients in antimicrobial and antiviral properties. For example, Patent Document 1 discloses an antimicrobial and antiviral polymeric material having microscopic particles of copper ions embedded in the polymeric material and protruding from the surface. [0003] Patent Documents 2 to 4 disclose that copper(I) compounds have antimicrobial and antiviral properties superior to copper(II) compounds. Patent Document 5 disclose...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N55/02A01N59/20
CPCA01N59/20A01N25/22
Inventor 李定黑田靖细木康弘宫石壮
Owner SHOWA DENKO KK
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